Replace a neon bulb with white LEDs in a Mickey Mouse nightlight

this is a very old Mickey Mouse nightlight. So old it was made in USA. That should date it as long ago. Anyway, it had a neon bulb that was nearly dead inside. I removed that and replaced it with a pair of white LEDs salvaged from a dead LED light bulb. The circuit consists of a pair of the white LEDS wired back to back (cathode of the first to the anode of the other, and the anode of the first to the cathode of the other) That combination is then in series with a 47K 1/2W resistor, And that circuit goes across the 120V powerline. Use a pair of 47K 1/2W resistors, one for each side of the LED circuit for 230V. The 2nd picture shows the circuit board wafer that was inside the dead LED lightbulb. I cut out a piece of this that has a pair of LEDs, back to back of the board.

The current is about 2.5ma, and the resistor is running around 1/3 watt. I cut a segment of the board that has a pair of LEDs mounted, one on each side of the board. These LEDs spread their light pretty evenly, not directional like most LEDs do. The board segment acts as a small heat sink, and I didn't unmount the LEDs off the board. I'm not running the LEDs all that hard, afterall. Each LED is lit a little less than half the time over a cycle of 60Hz. And each LED only sees a backwards 2.5V or so, as the other LED conducts and limits that backwards voltage the first LED sees. Each LED flickers at a 60Hz rate, but as each LED's flicker is interlaced with the other's flicker, the overall flicker rate is 120Hz. Each LED is operating around 2.5mW on average, 2.5V times 2.4ma, and each LED is on about 40% of the time..

The above picture shows the internal circuit, the LEDs and resistor. You have to keep this circuit narrow enough to fit thru Mickey's neck. That dictates the circuit board cutting as marked in the above middle picture. The circuit needs to place the LEDs high enough but not too high to evenly illuminate Mickey front and back.

People were asking about the type of outlet Mickey above was plugged into. It's a 120V 15A AC duples Despard 2 prong. Dates back to the early 1950s.